Fill Mesh is an add-on for Blender that automates the process of finding and closing gaps in 3D models. The tool identifies open edges without requiring manual selection, allowing users to seal specific areas or close all holes across an active object simultaneously. It utilizes native Blender calculations such as Grid Fill, standard Fill, and Contextual Create to generate appropriate geometry for the gaps.

Additional features include a vertex snapping tool that automatically moves selected vertices toward a target group, and a merge function that fuses nearby vertices within a specified distance to clean up topology. A bridge fill option is also included for manual edge selection. The tool is designed to help repair 3D scans, sculpted objects, and remeshed models by rapidly creating watertight meshes.